It has been an eventful few days for convicted murderer Stacey Castor. Thursday, she was brought back to Onondaga County for a court hearing. Friday night, she was the subject of a special two-hour report on ABC's "20/20," which retold the story of her trial for the murder of her second husband David Castor. Now, the Internet is buzzing with comments and follow-up reports about the TV special.

Comments on the ABC News Web site are running heavily against Castor and her mother, who also spoke on camera with ABC News reporter David Muir. The network refers to Castor as "the black widow." (Post your comments by clicking on the link at the end of this story.)

Castor's court appearance this week focused a motion by on Onondaga County DA William Fitzpatrick seeking an order from Judge Joseph Fahey authorizing grand jury minutes -- which are supposed to be secret by law -- to be turned over to Cayuga County officials for use in prosecuting Castor in the January 2000 antifreeze poisoning death of first husband Michael Wallace.

Meanwhile News 10 Now is reporting that first wife of David Castor, Janice Poissant, is pushing for a mandatory autopsy law, saying that an immediate autopsy in the death of Michael Wallace might have prevented the subsequent murder of David Castor.

Fahey reserved decision on whether to unseal grand jury minutes. He questioned the need to release the minutes when there is a more substantial transcript of Castor's murder trial available.

Chief Onondaga County Assistant District Attorney James Maxwell said both transcripts could prove useful as "investigative guides" for Cayuga County prosecutors. Defense lawyer Charles Keller, however, contended the request was based on convenience rather than legal necessity.

Castor, 41, was convicted in February of murdering second husband David Castor with antifreeze in 2005 and trying to murder daughter Ashley Wallace in 2007 in a plot to blame her for the murder. Cayuga County officials are considering a murder prosecution after authorities exhumed the body of first husband Michael Wallace and concluded he died from antifreeze poisoning in 2000.

Castor, transported from the Bedford Hills Correctional Facility for Thursday's court appearance, didn't find out why she was coming back until she got here, Keller said.